Procedure for connecting a roof element to a frame and roof fittings

Description

BE2025 / 5068 2 permits. Compared to classic adhesives, such as a two-component adhesive, extrudable tape has the advantage that it can be easily removed by stretching the tape (so-called stretch-release technique). The roofing system can be intended for a flat roof or a pitched roof, and the upstand can be any upstand on which a frame can be placed. The upstand, the frame, and the roof element can have any shape and be, for example, rectangular, in particular square, or round. Preferably, the extrudable tape is a thermoplastic, rubber-based, pressure-sensitive adhesive. Because the frame and the roof element are moved towards each other so that the tape is compressed, it will adhere well to both the frame and the roof element. The extrudable tape is, for example, a 3M M / V HBTM Extrudable Tape GP that is commercialized by 3M.15 Preferably, the extrudable tape consists of synthetic rubber. Optionally, the tape may include a protective coating of polyolefin.Preferably, the extrudable tape has an extrusion temperature between 180 and 250°C.20 Preferably, the extrudable tape is applied to the frame, and the roof element is subsequently placed on the extrudable tape, whereby the tape is pressed down slightly by the roof element. Such a method of working can be easily automated and results in the assembly of a frame with one or more roof elements that are robustly connected on the one hand and easily recyclable on the other. In an economical design, the extrudable tape has a diameter during application that is between 5 mm and 15 mm, preferably between 6 mm and 10 mm, and after assembling the roof elements, the extrudable tape forms a layer with a thickness between 0.5 mm and 30 mm, preferably between 1 mm and 3 mm. In an economical design, the frame has a top wall, an inner wall, and a support extending inwards from the inner wall, and the extrudable tape is applied between the supports and the roof element.Preferably, the support is provided with a raised inner edge, whereby the roof element rests on the inner edges after assembly and the extrudable tape is compressed 2025 / 5068 BE2025 / 5068 3 into a layer with a thickness determined by the inner edge. Optionally, the extrudable tape can extend up against the inner edge after the roof panel has been installed. In an economical design, the frame has a top wall, the extrudable tape is applied to a perimeter strip of the top wall, and the roof element is mounted on the 5 extrudable tape on the top wall. The top wall can be the top side of the support or a top wall of the frame. It is also possible to attach a first roof element to the support with extrudable tape and then attach a second roof element to the top wall of the frame with extrudable tape. 10 In a preferred design, the frame comprises a plastic profile and a metal profile, where the metal profile is attached to the plastic profile, for example by clamping, and the top wall of the frame is a top wall of the metal profile.In such a design, particularly good adhesion can be obtained between the metal profile and the extrudable tape. The metal profile can first be connected to the roof element via the extrudable tape, and subsequently secured to the plastic profile. According to an alternative design, the metal profile is first secured to the plastic profile, after which the roof element is attached to the metal profile by means of an extrudable tape. In one possible design form, the roof element is a first roof element, and the procedure further entails the installation of a second roof element on the first roof element, preferably with the insertion of a spacer, after which a second extrudable tape is applied in a joint between the frame and the second roof element.According to a second aspect of the invention, a method is provided for connecting a roof element to a frame intended to be mounted on an upstand of a roof installation, which comprises the following steps: applying a roof element in a frame and applying extrudable tape in a joint between the frame and the roof element. By using extrudable tape to seal the joint between the frame and the roof element, a robust seal in the form of a seamless seal, which is particularly airtight and moisture-tight, can be obtained by a simple method. This seal adheres well to the roof element and the frame, and is removable and allows for the separation of materials. Compared to classic adhesives, such as two-component adhesives or sealants, extrudable tape has the advantage that it adheres well yet can be easily removed by stretching the tape (the so-called stretch release technique).2025 / 5068 BE2025 / 5068 4 In one possible execution form, the roof element is a second roof element, and prior to the installation of the second roof element, a first roof element is installed in the frame, after which a spacer is installed on the first roof element, and the second roof element is installed on the spacer. Preferably, the frame has a top wall, an inner wall, and a support extending inwards from the inner wall, whereby the first roof element is installed on the support, preferably with the insertion of an extrudable tape. In an economical execution form, the frame is provided with a flexible elliptical tube extending between an inner wall of the frame and an edge of the roof element, and the extrudable tape is installed on the flexible elliptical tube. According to an alternative execution method, a filling material, such as a foam, is applied in a space between an inner wall of the frame and an edge of the roof element, and the 15 extrudable tape is applied to the filling material.Preferably, the extrudable tape is applied in a single movement such that one end of the extrudable tape connects to a beginning of the extrudable tape. Alternatively, the extrudable tape is applied in several sections. Preferably, the extrudable tape20 is applied to the frame, but it can also be provided on the roof element or on both the frame and the roof element. Preferably, the roof element comprises one or more of the following, optionally mounted in a support, such as a frame profile: glass sheet, glass dome, polycarbonate sheet. The roof element can therefore25 be, for example, a single-walled glass sheet or a multi-walled glass element comprising multiple glass sheets connected to each other by a profile. Optionally, the roof element can be supported during the curing of the extrudable tape, for example to prevent the extrudable tape from being compressed too much.30 The frame can, for example, be made of plastic, such as PVC or polyester, or of a metal, such as aluminium, or of a combination thereof.2025 / 5068 BE2025 / 5068 5 According to a further aspect, the invention concerns a roof installation comprising a frame intended for attachment to an upstand, and a roof element, such as a roof panel or a roof dome, where an extrudable tape is provided between the frame and the roof element. Preferably, the extrudable tape is applied continuously so that a closed loop is formed between the frame and the roof element. In this way, the extrudable tape not only ensures good fastening but also creates a tight assembly. Preferably, the extrudable tape extends along a perimeter strip of the frame and along a corresponding perimeter strip of the roof element, between an upper side of the frame and a lower side of the roof element, such that the roof element and the frame are attached to each other along the perimeter strip. Preferably, the extrudable tape in the roofing system has a thickness between 0.5 mm and 5 mm, more preferably between 1 mm and 3 mm.15 In an economical design, the frame has a top wall, an inner wall, and a support extending inwards from the inner wall, and the extrudable tape is applied between the support and the roof element. Optionally, the support is provided with a raised inner edge on which the roof element rests, whereby the extrudable tape forms a layer with a thickness determined by the height of the inner edge. In another economical design, extrudable tape is applied in a joint between the frame and the roof element. 25 In a variant with at least two roof elements, a first extrudable tape can be provided between the frame and a first roof element, and a second extrudable tape can be provided between the frame and a second roof element. In a possible design, the frame is provided with a flexible lip that extends between the frame and an edge of the roof element, and the extrudable tape is applied to the flexible lip.In another possible design, a filling material, such as a foam, is applied in a space between the frame and an edge of the roof element, and the extrudable tape is applied to the filling material. 35 2025 / 5068 BE2025 / 5068 6 In another possible design, the frame has a top wall, and the extrudable tape is applied between a perimeter strip of the top walls of the roof element. Optionally, the frame may comprise a plastic profile and a metal profile, where the metal profile is fixed to the plastic profile and the top wall of the frame is a top wall of the metal profile. 5 According to a further aspect, the invention concerns a roof installation comprising a first roof element and a second roof element, where an extrudable tape is provided between the first roof element and the second roof element, where preferably at least one of the first and the second roof element is a dome shell. 10 Preferably, the dome shell has a curved part, predominantly flat perimeter parts, and optionally a part sloping downwards.Extrudable tape can be provided between opposing flat perimeter sections of adjacent dome shells. In this way, the dome shells can be attached to each other prior to disassembly by means of extrudable tape.15 Short Figure Description The above and other advantageous properties and objectives of the invention will become clearer and the invention will be better understood by means of the following detailed description when read in combination with the drawings in the appendix, in which: 20 Figure 1 shows a perspective view of a first design of a roof structure with an upstand, a frame and a roof element; Figure 2 shows a perspective view of one side of the design of Figure 1, in which the roof element has been omitted; 25 Figure 3 illustrates a cross-section according to II-II of the design of Figure 1; Figure 4 shows a cross-section of a design of a frame similar to the frame of Figure 2, with integrated roof elements; Figure 5 shows a cross-section of the second design form of a roof structure with a parapet, a framing and roof elements; 30 Figures 6A to 6D schematically illustrate a method according to the invention; Figures 7 and 8 show cross-sections of two further design forms of a roof structure.In the drawings in the appendix, the same or corresponding numbers have been assigned to similar or identical elements throughout the figures.35 2025 / 5068 BE2025 / 5068 7 Detailed forms of execution A first form of execution of a roof installation according to the invention is illustrated in figures 1, 2, 3 and 4. The roof installation comprises a frame 100 that is attached to a parapet 0, and one or more roof elements 200, 202 that are supported by the frame 100. In Figure 1, one roof element 200 is indicated, but as illustrated in Figure 4, for example, two roof elements 5 can also be provided in the frame 100. The roof elements 200, 202 can be, for example, transparent glass or plastic plates as shown in figure 4, but could also be dome shells. The roof installation here is a square roof installation, but the professional understands that this is also another can have a shape, for example a round shape. 10 The frame100 has a top wall101, a bottom wall102, an outer side wall104 and an inner side wall103, see figure 3. The bottom wall102 is intended for placement on the uprightO.The top wall 101 is opposite the bottom wall 102, and one or more reinforcing walls can be provided between the top wall 101 and the bottom wall 102. The inner wall 103 encloses a space here around a roof element 200 to be attached, see Figure 4. The outer wall 104 is opposite the inner wall 103. The frame 100 further has a support 120 extending inwards from the inner wall 103 for supporting one or more roof elements 200, 202. The top wall 101 of the frame 100 is thus formed here by the top side of the support 120 and a top side bordering the outer wall 104. 20 As shown in Figure 4, an extrudable tape500 is provided between the roof element 200 and the frame 100. The extrudable tape500 is applied continuously so that a closed loop is formed between the frame 100 and the roof element 200. The extrudable tape500 is preferably a thermoplastic, rubber-based, pressure-sensitive adhesive that is cured.The extrudable tape 500 extends along a perimeter strip of the frame100 and along a corresponding perimeter strip of the roof element200, between a top side of the frame100, a top side of the support120 of the frame100 here, and a bottom side of the roof element200, such that the roof element200 and the frame100 are attached to each other along the perimeter strip. The extrudable tape500 in Figure 4 has a thickness between 0.5 mm and 5 mm, preferably between 1 mm and 3 mm.30 The support120 is provided with a raised inner edge121 and optionally with a flexible lip146 at one end of the raised inner edge121 which is rigid compared to the flexible lip146. The roof element200 rests on the inner edge121 and the extrudable tape500 forms a layer with a thickness essentially equal to a height of the inner edge121 without the 35 flexible lip146. The support120 is designed in the form shown here as a 2025 / 5068 BE2025 / 5068 8 support frame that protrudes from the bottom of the inner wall103 of the frame100.In some configurations, the frame100 can comprise multiple chambers for stronger support of one or more roof elements. The cross-section of the frame100 can, for example, essentially have a double-walled L-shape in which a number of internal walls are provided. The sealing lip146 is preferably designed to conceal the interior between the frame100 and the first integrated roof assembly200 from view. Preferably, the inner wall103 of the frame100 is L-shaped to form the adapted support120. In particular, Figure 3 also shows that a part of the upper surface of the support120 can be provided with ribs or irregularities, for even better attachment of the roof element200. 10 As shown in Figure 4, a second extrudable tape 502 is provided between a second roof element 202 and the frame 100. The second roof element 202 is installed above the first roof element 200 with the insertion of a spacer 300. The second extrudable tape 502 is also installed continuously so that a second closed loop is formed between the frame 100 and the second roof element 202.The second extrudable tape 502 is applied here in a 15 joint between the frame 100 and the roof element 202. The frame 100 is here provided with a flexible lip 125 extending between an inner wall 103 of the frame and an outer edge of the roof element 202, and the extrudable tape 502 is applied to the flexible lip 125 in a joint between the inner wall 103 and the roof element 20220 so that this joint is sealed. According to an alternative, unillustrated version, no flexible lip 125 is provided, but a filling material, such as a foam, is applied in a space between an inner wall of the frame and an outer edge of the roof element, and the extrudable tape is applied to the filling material to 25 seal a joint between the inner walls and the roof element. The frame 100 here is preferably a frame composed of plastic profiles, for example PVC profiles. 30 Some further optional details of the framework illustrated in the figures are explained below, but these are by no means restrictive and may be implemented differently in versions of the invention.Optionally, the frame100 can be provided on opposite sides thereof with at least one spring part410 each, which is shaped to engage with the uprightO by snap connection for clamping the frame100 onto the uprightO. The spring part410 is directed downwards from the bottom wall102 of the frame100, see Figure 3. Figure 2 shows only one side100a of the frame100. Figure 1 shows that a spring part410 can be provided on each side100a,100b,100c,100. The professional understands that two or more spring parts410 can also be provided on each side100a,100b,100c,100. can be provided, and that it is also possible to provide a spring part on only two opposite sides. The professional understands that many other mounting techniques are possible, such as screwing directly onto the upright, using a hinge set, by means of an intermediate extra frame; etc.As shown in Figure 3, the outer side wall 104 optionally has an outward and downward angled flange 141 which preferably connects in a European sealing manner against the at least one spring-loaded part 410. To this end, the flange 141 can be provided with a seal 142 on the inside thereof. The outward-facing flange141 is intended for pre-drainage. The frame100 optionally includes sealing lips143,144 at the level of the inside of the bottom wall102. The seals 142,143,144 are intended for air sealing between the surroundings and the interior of the frame 100 – to better thermally insulate and / or to maintain internal overpressure at the level of the interior15 of the frame100. Lip142 seals against a side wall of the uprightO and against spring parts410, and lips143,144 seal against a top wall11 of the uprightO. The profiles 100a,100b,100c,100d of the frame100 can be formed as extruded profiles with seals142,143,144 formed by co-extrusion. The profiles100a,100b,100c,100d are at least partially attached to each other in the quadrilaterals of the frame100.The seals20 143,144 are pressed against the uprightO by the action of the spring parts410. Figure 5 illustrates another possible design with two roof elements200,200'. The roof element200 can also be attached with an extrudable tape500 to a support120 of the frame100, as described for Figure 4, but could also be attached25 to the support120 in another way. The second roof element200' is mounted here on an upper wall 101 of the frame at a distance from the first roof element200. An extrudable tape500' is applied between a perimeter strip of the upper wall101 and the roof element200'. The frame 100 comprises four plastic profiles 100x and four metal profiles 100y. A metal profile 100y clamped onto a plastic profile 100x, and the top wall 101 of the frame 100 comprises a top wall of the metal profile 100y. Figures 6A to 6D illustrate a schematic and practical design of a method for connecting a roof element 200, such as a roof panel or a roof dome, to a frame 100 that is intended to be mounted on an upstand (O) of a roof installation.The procedure comprises the following steps. An extrudable tape500 is applied along a perimeter strip of the frame100, as illustrated in figures 6A and 6B and / or along a perimeter strip of a roof element200 (not illustrated, but the professional understands that this is also an option). To apply the extrudable tape, a system with a heating head is preferably used in which the extrudable tape is heated before applying it to the frame or roof element.5 The extrudable tape is preferably supplied on a roll and is guided from the roll to the heating head, which then applies the heated tape to the frame100 or the roof element200. The extrudable tape is preferably a thermoplastic rubber-based tape. pressure-sensitive adhesive. After applying the extrudable tape500, the roof element200 and the frame100 are brought together such that the roof element200 and the frame100 are attached to each other along the 10 circumferential strip by the extrudable tape500, see the schematic cross-section in Figure 6D.Figure 6C shows the extrudable tape at the moment it leaves the heating head. Preferably, the extrudable tape has a diameter D during application that is between 5 mm and 15 mm, preferably between 6 mm and 10 mm, and after joining the roof elements to the frame, the extrudable tape has a thickness D between 0.5 mm, 15 mm and 5 mm, preferably between 1 mm and 3 mm. Figures 6A to 6D illustrate an execution form with a square frame, but the professional understands that any shape is possible, for example, also a round shape. The extrudable tape is preferably a thermoplastic, rubber-based pressure-sensitive adhesive. Because the frame and the roof element are moved towards each other so that the tape is compressed, it will adhere well to both the frame and the roof element. The extrudable tape is, for example, a 3M M / HBTM Extrudable Tape GP that is commercialized by 3M. Preferably, the extrudable tape consists of synthetic rubber. Optionally, the tape may include a protective coating made of polyolefin.Preferably, the 25 extrudable tape has an extrusion temperature between 180 and 250°C. Figures 6A to 6D are schematic drawings to illustrate the method, but the professional understands that this method can be used for applying an extrudable tape500, 500',502 to one of the following, where the reference numbers refer to elements discussed above with reference to Figures 1 to 5: -a support120 protruding inwards from the inner wall103, see extrudable tape500 in figure 4; the support120 may be provided with an upright inner edge121 with a height smaller than the diameterD of the applied extrudable tape, whereby during assembly the roof element200 is brought into contact with the inner edge121 such that35 the extrudable tape500 is compressed into a layer with a thicknessd that is determined 2025 / 5068 BE2025 / 5068 11 through the height of the inner edge 121.Optionally, the extrudable tape 500 can extend to the inner edge 121 after the roof element 200 has been installed; -on a perimeter strip of the top wall 101 of the frame 100, see the extrudable tape 500 in Figure 5 between the second roof element 200 and the frame 100. Optionally, the frame can include a plastic profile and a metal profile, where the metal profile is attached to the plastic profile and the top wall of the frame is a top wall of the metal profile. -in a joint between the frame100 and the second roof element202. Optionally, the frame 100 can be fitted with a flexible lip125 extending between an inner wall103 of the frame100 and an outer edge of the second roof element202, and the extrudable tape502 is applied to the flexible lip125. Alternatively, a filling material, such as a foam, can be applied in a space between an inner wall of the frame and an edge of the second roof element, and the extrudable tape can be applied to the filling material.15 Preferably, the extrudable tape500,500',502 is applied in a single movement such that one end of the extrudable tape connects to a beginning of the extrudable tape. Alternatively, the extrudable tape500,500',502 can be applied in sections, for example in four steps whereby the frame100 is provided with extrudable tape500,500', 502 side by side. One could also apply a part to a roof element200,200',202 and another part20 to the frame100. Optionally, the roof element200,200',202 can be supported during the curing of the extrudable tape. 25 The roof element 200, 200', 202 preferably comprises one or more of the following, optionally mounted in a support such as a frame profile: glass sheet, glass dome, polycarbonate sheet. The roof element 200, 200', 202 can, for example, be a multi-walled roof element, in which two or more glass sheets or polycarbonate sheets are attached in a frame profile.Optionally, the roof element on which the extrudable tape500,500',502 is to be applied can be provided with a30 coating, for example to obtain specific adhesion properties. The multiple plates of a roof element can be separated from each other, for example, by means of one or more spacers. The spacer can be made of metal, for example aluminium, preferably aluminium with silica gel filling for thermal stability, fire resistance, and / or moisture absorption. The spacer can be shaped as four elongated profiles which are mitered at 45° at their ends and which are welded together at those ends to form a 2025 / 5068 BE2025 / 5068 12 quadrilateral frame. Other shapes, such as round shapes, are also possible. Air can be provided in a cavity between the two parallel plates, or another insulating material can be provided.The professional understands that the roof element can be executed in various ways, with reference to the Belgian patent application BE2016 / 5055 in the name of the Applicant, which is included herein by reference. Furthermore, the frame can support more than 5 non-composite roof elements, and these can contain plates and / or dome shells. Figure 7 illustrates schematically another design of a dome device according to the invention. The dome device comprises a first roof element 200 with a first essentially flat glass plate 10, a second essentially flat plate 20, and a second roof element 200 in the form of a glass dome element. A spacer 41 is provided between the first and the second roof element. The spacer 41 is provided between a perimeter part 31 of the glass dome element 200 and a perimeter part 11 of the first glass plate 10, such that the glass dome element 200 is situated at a distance from the first glass plate 10.The spacer41 preferably extends15 along the entire perimeter of the first glass plate10 and of the glass dome element200', such that an enclosed spaceR is bounded by the spacer41, the first glass plate10 and the glass dome element200'. The first roof element 200 is secured in a frame 100 by means of a first extrudable tape 2047 and the second roof element 200 is secured in the frame 100 by means of a second extrudable tape 46 in a joint between a perimeter edge of the roof element 200 and an inner wall of the frame 100. Optionally, a gas, for example argon, can be included in the enclosed space R between the first and second roof element 200. The gas layer ensures good insulation of the dome assembly. The frame 100 can further be adapted to allow simple 25 mounting on the upstand, for example by using a profile that can be secured in a profile on the upstand by clamping (snapfit). Optionally, sealing tapes 42, 43 can be provided between the spacer 41 and the glass dome element 30 and the first glass plate 10, respectively.Optionally, a sealing strip4430 may further be provided on an outer edge of the spacer41, between the glass dome element30 and the first glass plate10. Optionally, the spacer41 contains a desiccant, for example a silica gel. If moisture is present in the enclosed spaceR, the desiccant can absorb this moisture and thus prevent condensation in the spaceR. The second, essentially flat plate20 is mounted parallel to the first glass plate10, is preferably a glass plate, and is preferably 35 attached to the first glass plate10. Optionally, a 2025 / 5068 BE2025 / 5068 13 film50 may be provided between the first and the second glass plate10, 20, for example a polyvinyl butyral (PVB) film. This is a transparent adhesive film that helps to absorb energy in the event of an impact on the roof structure, whereby any shards remain adhered to the PVC layer. According to a variant, a polycarbonate layer can be laminated between the first glass plate and the second glass plate. Such a layer can also ensure good adhesion between the first glass plate and the second glass plate.Preferably, at least the first glass pane10 is made of hardened, also called tempered, glass. Even more preferably, both the first and the second glass panes10,20 are made of hardened glass. According to yet another variant, the second pane20 is a plastic pane, for example a polycarbonate pane laminated against the first glass pane10. The second pane20 can also be located between the first glass pane10 and the glass dome element30.10 In this case, the second pane can also function as a spacer and the spacer41 can optionally be omitted.

Images